Storage battery.



No. 699,658. Patented ma l3, 19oz H. J. COGSWELL.

STORAGE BATTERY.

(Application filed 0ct 28 1899.)

} Tfiznasses: Inuent0r:

UNlTED STATES PATENT OFFICE.

HENRY J. COGSXVELL, OF HARTFORD, CONNECTICUT, ASSIGNOR TO TI-IE HARTFORD ACCUMULATOR COMPANY, OF HARTFORD, CONNECTI- CUT, A CORPORATION OF CONNECTICUT.

STO RAG E BATTERY.

SPECIFICATION forming part of Letters Patent No. 699,658, dated May 13, 1902.

Application filed October 26, 1899. Serial No. 734,811. (No model.)

To all whom it may concern:

Be it known that I, HENRY J. COGSWELL, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented a new and useful Storage-Cell, of which the following is a specicompared with prior structures of the class.

To this end my invention consists in a storage-cell or accumulator as a whole, in the rigid electrode, and in details of the parts and their combination, as hereinafter described, and more particularly pointed out in the claims.

Referring to the drawings, Figure l is a viewin side elevation of acell of myimproved construction with parts broken away. Fig. 2 is a top or plan view of the cell. Fig. 3 is a detail view, on enlarged scale, of an electrode. Fig. -l is a like detail View, on enlarged scale, showing details of the electrode. Fig. 5 is a view in side elevation, on enlarged scale, of the improved form of electrode. Fig. 6 is a detail view of the upper end of an electrode, showing the insulatorstud and means of attachment. Fig. 7 is a detail View in section of the insulator-stud at the upper end of an electrode, showing means of attaching a terminal.

In the accompanying drawings, the letter a denotes a vessel to hold the grid b and the active liquid in which the latter is placed. This grid 1) is made up of a top plate 0, a bottom plate d, and electrodes 6, which extend between the plates. The electrodes e are preferably of the same length and size, supported by and extending between the positive plate (I in the bottom of the jar a and the negative plate 0 near its top. These plates are arranged at a distance apart greater than the length of the active portion of the electrodes, as an insulating-stud h, of rubber or other non-conducting material, is interposed between the end of each electrode and the plates in such manner that one end of each positive electrode is in electrical contact with the positive plate, but its other is insulated from the negative plate by the insulating-stud h. The negative electrodes are arranged in the same way in contact with, the negative plate and insulated by the studs on the opposite plate. This construction enables the lower ends of one set of the electrodes, which stand upright in the grid, (in the case illustrated inthe negative set,) to be raised high enough from the bottom plate to keep clear of any accumulation of particles of material thrown off from the electrodes in the action of the battery, which might otherwise form an electric bridge between the electrodes of opposite polarity. Each stud his attached to the plate,preferably by means of athreaded shank h,whicl1 fits a threaded socket in the plate,and it has a socket (see Fig. 6) into which the projecting end of the electrode fits. By means of this construction the grid as a Whole is madeup of only two plates and the electrodes ext-ending between them while retaining all the advantages of thealternate location of the electrodes in several rows and in such relation as to increase the speed with which the battery may be charged. The plan view in Fig. 2 will show the arrangement of positive and negative electrodes and their close relation.

Each electrode e is made of what is called squirted lead, formed in a cylinder of the desired length and diameter, and then by means of dies rolled under heavy pressure until a large number of disk-like flanges t are formed along the length of the electrode, each located in a plane substantially at right angles to the axis of the electrode. At intervals along its length there is formed or located a flange t" of increased thickness and of sufficient rigidity to form an abutment, the function of which is to so divide the strains due to the action of the battery as to resist the tendency to warp and buckle and to counteract the effects of the expansion and contraction of the electrode, which if unchecked results in too great a displacement of the active elementsperoxid or spongy leadfrom between the flanges. The space between the flanges is filled with peroxid of lead for one set and spongy lead for the other in the usual manner. In order to give the electrode sufficient rigidity, it is preferably made with a 7 core 7c of hard lead or an equivalent material,

on which a jacket of the softer (squirted) lead is formed, and then shaped by roller-dies to form the flanges, as described.

A preferred manner of providing a terminal is illustrated in Fig. 7 of the drawings, where the insulating-stud is perforated for the passage of the end of the core k, a washer Z, of insulating material, located on the projecting end of the cone and on the upper plate underlying the terminal m, which is held in place by a nut n or equivalent means. In like manner and by the same means a terminal m is secured to the projecting end of one of the electrodes of the set ofopposite polarity.

,The completed cell is simple in construction, compact in form, and has the elements so constructed and arranged that distortion of parts, loss by waste, or short-circuiting within the cell are avoided.

I claim as my invention- 1. As an improved article of manufacture an electrode comprising a body portion, a series of annular flanges equally disposed along said electrode, and fixed abutments arranged at intervals between each series of annular flanges, both the flanges and abutments being formed in the body portion of the electrode.

2. As an improved article of manufacture an electrode comprising a core of an timonious lead bearing fixed abutments disposed at intervals along said electrode, a filling of soft lead arranged between said abutments and divided into a series of flanges, said soft lead being closely united to the core of antimonious lead.

3. Asan improved article of manufacture an electrode comprising a core and fixed abutments disposed at intervals along the core, a holder for an active material arranged upon said core between the abutments and consisting of a soft lead, said holder being divided into a series of flanges and the whole electrode being substantially cylindrical in cross-section.

HENRY J. COGSVELL.

Witnesses:

CHAS. L. BURDETT, ARTHUR B. JENKINS. 

